Repeater for rolling-mills



(No Model.) 3 Sheets-Sheet 1.

S.V.HUBER. I REPEATER FOR ROLLING MILLS.

No. 555,375. Patented Feb. 25, 1896.

3 Sheets Sheet 2.

(No Model.)

S. V. HUBER. REPEATER FOR ROLLING MILLS.

Q Q Q Q AN DREW EYGRAHAM. FHflTO-UYHD.WASHINGTUH, 07C

3 Sheets-Sheet 3 (No Model.)

S. V. HUBER. REPEATER- FOR ROLLING MILLS.

No. 565,375 I Patented Feb.-25, 1896.

WITNESSES INVENTOR fimfw. J WJ MW UNITED STATES PATENT OFFICE.

SIGMUND V. HUBER, OF PITTSBURG, PENNSYLVANIA.

REPEATE R FOR ROLLING-MILLS.

SPECIFICATION forming part of Letters Patent No. 555,375, dated February25, 1896. Application filed September 5, 1895. Serial No. 561,541. (Nomodel.)

To all whom it may concern.-

Be it known that I, SIGMUND V. HUBER, a citizen of the United States,residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented or discovered certain new and usefulImprovements in Bepeaters for Rolling-Hills, of which improvements thefollowing is a specification.

The invention described herein relates to certain improvements inrepeaters for rolling-mills.

As heretofore constructed, it is impossible to use repeaters for guidinga bar of metal from one pass to another when the bar is not sufiicientlylong to extend from one pass to the other. In other words, one pair ofrolls must act as a feeder to the other pair when using the present formor construction of repeater.

The object of the present invention is to provide by means ofpositively-driven rollers for the feeding of long or short bars orpieces of metal through a curved trough arranged between two passes;and, in general terms, the invention consists in the construction andcombination substantially as hereinafter more fully described andclaimed.

In the accompanying drawings, forming a part of this specification,Figure 1 is a plan view of a rolling-mill having my improved repeaterapplied thereto. Fig. 2 is a side elevation of the repeater. Fig. 3 is asectional ele vation, on an enlarged scale, the plane of section beingindicated by the line III III, Fig. 1. Fig. 1 is a plan view of theslide for shifting one of the feed-rollers. Fig. 5 is a detail viewshowing conical feeder-rollers. Fig. (3 is a sectional plan view, theplane of section being indicated by the line VI VI, Fig. 3; and Fig. 7is an end elevation of the ad justingslide.

In the practice of my invention a bed-plate 1 is secured on a suitablefoundation in the rear of the mill, consisting of the roughingrolls Aand the strand-rolls B. A stand 2 is movably mounted on the bed-plate,which is provided with suitable guideways therefor and with a toothedbar 3, engaging a gearwheel a on a shaft 5, mounted on the stand. Theouter end of the shaft 5 is provided with an angular nut or head 6 forthe reception of a handle for rotating the shaft, and thereby shiftingthe stand. The guideways for the stand are provided with dovetailgrooves for the reception of the heads of bolts 7, which pass up throughside flanges on the stand and serve to hold the latter in place. Thestand is provided with a convex rib 8 for supporting the table 9, whichis formed on its lower side with a concave seat fitting on the rib. Therib is provided with an undercut groove 10 for the reception of the headof a bolt 11, which passes up through the table, holding the latter inposition. At its outer corners the stand is provided with sockets 12 forthe reception of holding-bolts 13, which pass up through holes in thetable and operate in con nection with set-screws 14., screwing downthrough the table and bearing at their ends upon the stand to adjust andhold the table at any desired inclination.

Curved flanges 15 are formed on the upper side of the table in suchrelation to each other as to form a groove for guiding the bar from apass in the rolls A to a pass inthe rolls B. The receiving end of theguide groove or trough is preferably made wider than the passes in therolls A, so as to insure the entrance of the bar, and from this end thetrough gradually diminishes in width, the delivery end of the groove ortrough being approximately the width of the pass to which the bar is tobe delivered.

In order to adapt the repeater for use in rolling bars which are notsuificiently long to be fed by the rolls A through the trough into therolls B, one or more pairs of feedrollers 16 and 16 are arranged alongthe line of the trough for eifecting the onward movement of the barafter it has passed out of the bite of rolls A. The rollers 16 of eachpair are keyed on vertical shafts 17, mounted in sleeves 18, formed onthe under side of the table, and on the lower ends of the shafts arekeyed mitenwheels 19, adapted to engage corresponding wheels 20, wherebythe rollers are driven, as will be hereinafter described.

The miter-wheels 19 are provided above their beveled portions with teeth21, adapted to engage pinions 22 on the lower ends of shafts 23. Theseshafts are mounted in sleeves 24:, formed on the slides 25 andprojecting through openings 26 in the table and have the rollers 16keyed on their upper ends, as shown in Fig. 3. The slides 25 are mountedin suitable guides 27 on the under side of the table and have one end 25projecting beyond the table. The projecting end of the slide is providedwith an upturned portion 28, between which and the edge of the table areplaced springs 29. These springs, whose tension is regulated by screws29, tend to shift the slides in such direction as to move the rollers 16toward the rollers 16. The grip of rollers on the bar is regulated bymeans of nuts 30 on the threaded pins 31, which pass through slots inthe upturned portions of the slides and screw into the table.

In order to protect the bearin gs of the shafts 17 and 23 from scale,&c., the rollers 16 16 are provided 011 their under sides with grooves,into which project circular ribs 32, formed on the table and slides.

The miter-wheels 20 are keyed upon shaft 33, mounted in suitablebearings on the table and connected by gimbal-joints 34 with the shaft35, mounted in bearings 36. The driving-pulley 37 is so mounted on theshaft 35 between the bearings 36 as to permit the shaft to slidelongitudinally through the hub of the wheel, but to rotate therewith,thereby permitting of the adjustment of the repeater mechanism into linewith different passes of the rolls.

It is preferred to drive the feed-rollers of the repeater at asufficiently higher peripheral speed than that of the delivery-rolls Atocompensate for the reduction and consequent elongation effected by saidrolls. At such a speed there will not be any looping out of the bar; butin case of a reduction of speed of the rollers the bar will first loopup between the rolls A and the first pair of feed-rollers, when two ormore pairs are employed. This looping up will force the bar from betweenthe feed-rollers, but not until after the forward end of the bar hasbeen caught by the rolls B or until after the feed-rollers haveperformed their function.

Ordinarily, cylindrical feed-rollers are employed; but in case it isdesired to give the bar a greater turn while passing from the rolls A tothe rolls B conical rollers 16 16, one member ofeach pair beinginverted, are substituted for the cylindrical rollers, as shown in Fig.5. These conical rollers do not give an entire quarter-turn to the bar,but turn it sufficiently far'i. 6., about forty slive degrees-that whenthe end of thebar strikes the walls of the pass in the rolls acompleteturn of ninety degrees is effected.

It will be readily understood by those skilled in the art that theadjustments provided in my improved mechanism permit of the horizontaladjustment of the repeater, but also its vertical adjustment, so that itcan be employed in connection with two or three high mills, and that theseveral adj ustments can be easily and quickly effected.

While it is preferred to employ two sets or pairs of feed-rollers, theinvention is not'limited to that number, as in some cases one pair willbe sufficient, while in other cases three or more pairs will be needed,dependent upon the length of bars being rolled. It is furthercharacteristic of my improvements that, screwing the nuts 30 along theirpins31, the rollers 16 can be moved so far from the rollers 16 as not togrip the bars, the repeater being used in the ordinary manner. Ifdesired, only one roller of each need be positively driven, the otherroller being rotated by frictional contact with the article being fedthrough the trough.

I claim herein as my invention- 1. A repeater for rolling-mills havingin combination a curved trough adapted to guide a bar or rod from one toanother pass in the same pair or in an adjacent pair of rolls, means foradjusting such trough, one or more pairs of feed-rollers arranged so asto feed a bar or rod along said trough, means for rotating one roller ofeach pair, and an adjustable connection between the driving mechanismand the roller, substantially as set forth.

2. A repeater for rolling-mills having in combination a curved troughadapted to guide a bar or rod from one to. another pass, means foradjusting such trough, one or more pairs of positively-driven andoppositely-arranged conical feed-rollers located along the trough andadapted to axially rotate a bar or rod while feeding it along thetrough, means for rotating one roller of each pair, and an adjustableconnection between the driving mechanism and the roller, substantiallyas set forth.

3. A repeater for rolling-mills having in combination a stand arrangedparallel with one or more stands of rolls, means for adj usting suchstand, a table mounted on the stand and provided with a curved trough onits upper side, one or more pairs of feed-rollers mounted on the tableand adapted to feed the bar or rod along the trough, means for rotatin gsaid rollers, and an adjustable connection between the driving mechanismand the rollers, substantially as set forth.

at. A repeater for rolling-mills having in combination a stand arrangedparallel with one or more stands of rolls, a table provided with acurved trough, means for adjusting the table on the stand, and one ormore pairs of positively-driven feed-rollers mounted on the table andadapted to feed a bar or rod along the trough, substantially as setforth.

5. A repeater for rolling-mills having in combination a stand, a tablemounted on the stand and provided with a curved trough, one or moreslides adj ustably mounted on the table, andv one or more pairs ofpositively-driven feed-rollers, one roller of each pair being mounted onthe table and the roller of each pair being. mounted in the slide,substantially as set forth.

In testimony whereof I have hereunto set my hand.

SIGMUND V. HUBER.

lVitnesses:

DARWIN S. WALCOTT, G. I. HOLDSHIP.

